The In-Situ Level TROLL 400 Water Level Logger eliminates problems commonly found in the industry while also providing the accuracy, reliability and ease of use needed for long-term water level monitoring. Its titanium construction outlasts specially-coated data loggers. Enhanced electronic and sensor design provide long-term accuracy with internal memory of 130,000 data points and options of internal or external power. The Twist-Lock connector eliminates worries of lost data or communication failure while procedural and data errors are reduced through easy to use Windows-based software. The Level TROLL 400 provides the confidence needed to perform highly accurate water level studies with a complete and integrated solution.
The In-Situ Level TROLL 400 Water Level Logger instrument comes standard with the ability to communicate via Modbus, 4-20mA, SDI-12 and RS-485/232. Pressure sensor accuracy has been verified to meet or exceed 0.1% of full-scale operation, while maintaining one of the smallest sensor diameters in the industry. The instrument incorporates a fully sealed power cell, warranted to operate for a minimum of 5 years or 1,000,000 readings, whichever comes first. Long-term deployment is further assured with optional external power accessories. The Level TROLL 400 can be deployed with either suspension wire or direct read cable using the In-Situ Twist-Lock connector. An optional external barometer (BaroTROLL) is available for use with the Level TROLL 400, with seamless integration of barometric pressure compensation performed through In-Situ's Baro Merge software.
Sub-1 inch diameter for easy fit
Non-vented (absolute) pressure ranges up to 1120 ft (341 m)
Fully sealed, all titanium construction and sensors
Flexible communication protocols (4-20 mA, SDI-12, RS-485)
Direct-read or periodic data download capable
NIST calibration report
Rugged twist-lock cable sold separately
Rugged titanium construction - outlast specially-coated data loggers
Super accurate sensors - record minute changes in water level and temperature.
TIG-welded seals - prevents flooding of instrument.
Ultra-low power system - guarantees 5 years or 1 million readings.
RS-485 Modbus, SDI-12, and 4-20mA - provides for easy connections to existing and online systems.
Twist-Lock connectors - lock tight for 100% reliability.
Extendable cable assemblies - maximizes your investment and maintain flexibility with your unit.
Linear logging - perfect for long-term monitoring.
Pause logging feature - pause logging when removing a unit. Reinstall and restart where you left off!
Specify start and stop times for logging - collect the data you need up to the date you want and no more.
Ability to undelete files from the unit - no worries of accidentally deleting your data.
Data saved by sites not files - collect and save information by site automatically.
Easy-to-read memory and battery gauges - know exactly how much is left.
Friendly Wizards guide every step - reduces complicated steps and the need for tedious manuals.
FCC and CE emission tested - prevents susceptibility to outside emission interference and transient
Version, range, and manufacturing info printed on side of the unit - know the details of the unit without opening